Surgical truss



B. P. FRIEDEN.

SURGICAL TRUSS.

APPLICATION FILED JAN. 23. 1919.

Patented Aug. 16, 1921.

BRUNO PAUL FRIEDEN, OF HAMBURG, GERMANY.

SURGICAL TRUSS.

Specification of Letters Patent. Patented Aug. 16', 1921- Applicationfiled January 23, 1918. Serial No. 213,441.

To all whom it may concern Be it known that I, Bnoxo PAUL Fmnnnx,citizen of Hamburg, in the German Empire, residing at Hamburg, Germany,have invented certain new and useful Improvements in Surgical Trusses,of which the following is a specification.

The surgical or hernial trusses known heretofore have the drawback thatthe belt owing to its usual position on the back and on the back-musclesand nerves exerts an annoying pressure. This pressure frequentlyincreases to such an extent that it cannot be endured, because the beltpresses on those bony parts of the body, projecting intermediate of thethird and fourth sacral vertabree from the coccyx, which project morethan other bony parts. The said parts will protrude still more when thepatient bends his back or c rries out other movements. In consequence ofsuch movements the belt or truss is displaced from its proper positionso that it hinders the free movement and thus increases theinconvenience in using the truss and at the same time failing in itsobject and its effect.

The object of the present invention is to do away with these drawbacksand this is accomplished by moving the back part of the belt from theusual position to a posltion higher up. In this case the pressure of thebelt is distributed over a part of the back, where no vertebrae projectand the back part of the belt will be in a position, in which themovements of the body, such as the bending of the spine, will have noeifect on the belt, so that the truss remains unaltered and in itsproper position, and all shifting of it is prevented. The properposition is also moreover secured by the fact that the lateral parts ofthe belt remain in the lower line necessary for the convenient andinvariable fitting of the truss on the body of the patient.

By way of example a double truss is shown in Figure l of the drawing ina perspective view. Figs. 2, 3, a and 5 show modifications of theinvention.

The back part a of the belt a, in which is embedded a spring 0, is soshaped that it is oifset at 6, Z) at the back in such manner that thesaid back part c lies a certain distance above and parallel to theremaining parts a of the belt. The said back part c and the belt parts aare unyielding in the planes of the bearing surfaces, however, theysnugly adjust themselves to the shape of the body. The inflexibility ofthe back part (6 and the other parts a of the belt in their planes isdue to the fact that the spring 0 is fiat in cross section.

The oil setting of the spring 0 can be carried out in different ways. InFig. 1 it is understood that the back part c of the spring 0 togetherwith the offsets b and the front parts 0 of the spring are all madeintegral, cut from one piece, however, this being rather expensive, itis preferred to make the truss spring in sections and to fasten themtogether.

In Fig. 2 the back part c is made integral with the offsets or angularpieces 6 which are riveted or otherwise fastened to the front parts 0 ofthe spring. In Fig. 3 a special preferably rectangular plate 6 isriveted to the back part c and the front part c of the spring. In Fig.4: a Z-shaped plate is used for the setotl' part If, thus forminglateral prolongations on the top and bottom for securely riveting to theback part c and the front parts 0 In Fig. 5 an angular plate 6 is shownfor a similar purpose, having only one end provided with a lateralprolongation.

The pads e in the double truss shown are attached to the ends of thebelt parts a The belt parts a can be connected at the angular offsets bby a strap d. To enable this, each belt part 0. can be provided at thean ular offset with a button f and the ends or the said strap areprovided With a number of slits or holes 9 to enable the fastening ofthe strap to the buttons 7', by means of which a tighter or looseradjusting of the truss can be effected. If preferred, the middle part ofthe strap (i may be cushioned by a patch it of softer material.

The button 7'" may be either attached to the front parts of the spring,as shown in Fig. l or it may be attached to the special plate 6 as shownin Fig. 8.

For so called springless trusses the front part c of the spring may beomitted and merely a prolongation of the plate 11 may project into thatparticular belt part, as shown in Fig. 5.

A truss made according to the above explained invention will invariablyremain in its proper position when the patient is walking, sitting,lying or standing and will not exert an annoying pressure at any place.More particularly it prevents irritation of the ischiatic nerve. Owingto the displacement of the back part of the belt with re gard to theside parts or the belt, sensitive parts of the spine are not touched,but the pressure of the belt is, without impairing the proper fitting,removed to a higher part of the back, where the pressure is notinconvenient and where no change in the position of the bony parts takesplace, which would cause inconvenience and render the 1n0ve- A, mentdifficult.

to run across the hips and connected to the ends of the back section byupwardly extending sections.

2. A truss frame consisting of a plurality of sections flat in the samegeneral plane, one of said sections adapted to extend across the humanback, two sections adapted to run across the hips and connected to theends of the back section by upwardly extending sections, and a strapconnecting the hip sections at the lower ends of the upwardly extendingsections.

BRUNO PAUL FRIEDEN.

Witnesses EDUARD LIEBRAUN, ERNST HOFFMANN.

